400404206 has 16 divisors (see below), whose sum is σ = 604450080. Its totient is φ = 198925440.

The previous prime is 400404181. The next prime is 400404227. The reversal of 400404206 is 602404004.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256055 + ... + 257613.

It is an arithmetic number, because the mean of its divisors is an integer number (37778130).

Almost surely, 2^400404206 is an apocalyptic number.

400404206 is a deficient number, since it is larger than the sum of its proper divisors (204045874).

400404206 is a wasteful number, since it uses less digits than its factorization.

400404206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 400404206 is about 20010.1025984376. The cubic root of 400404206 is about 737.0544007829.

The spelling of 400404206 in words is "four hundred million, four hundred four thousand, two hundred six".